JP3300679B2 - Backlight structure in display device - Google Patents
Backlight structure in display deviceInfo
- Publication number
- JP3300679B2 JP3300679B2 JP01724999A JP1724999A JP3300679B2 JP 3300679 B2 JP3300679 B2 JP 3300679B2 JP 01724999 A JP01724999 A JP 01724999A JP 1724999 A JP1724999 A JP 1724999A JP 3300679 B2 JP3300679 B2 JP 3300679B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light guide
- lamp
- display device
- backlight structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Liquid Crystal (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
- Planar Illumination Modules (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液晶表示装置など
の表示部を照射するためのバックライトの構造に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a backlight for illuminating a display unit such as a liquid crystal display device.
【０００２】[0002]
【従来の技術】バックライトを使用した表示装置は、装
置の薄型，軽量化を目的として各種の表示装置に使用さ
れており、例えば液晶表示パネルの分野においても使用
されている。2. Description of the Related Art A display device using a backlight is used in various display devices for the purpose of reducing the thickness and weight of the device, and is also used, for example, in the field of liquid crystal display panels.
【０００３】液晶を応用した表示装置は、低電力，軽
量，省スペースなど、従来のディスプレィにない特徴を
有し、周辺技術の進歩により商品力が高まり、さまざま
な製品に使用されている。マトリクス表示を行う液晶表
示装置は、構造としてアクティブ・マトリクスと単純マ
トリクスとに分類されるが、中でも、画素ごとにスイッ
チング素子として薄膜トランジスタを用いたアクティブ
・マトリクス方式の液晶表示装置においては、クロスト
ークのない鮮明な画像表示が得られることから、ノート
ブックタイプのパソコンのディスプレイ、あるいはＥＷ
Ｓ用ディスプレイなどに使用され、急速に市場を拡大し
ている。この液晶表示装置においては、低消費電力ある
いはコンパクト性の要求により、主にエッジライト方式
のバックライトが用いられている。A display device using liquid crystal has features such as low power, light weight, and space saving, which are not present in the conventional display, and its commercial power has been enhanced by progress in peripheral technology, and it has been used in various products. Liquid crystal display devices that perform matrix display are classified into an active matrix and a simple matrix in structure. Among them, an active matrix liquid crystal display device that uses a thin film transistor as a switching element for each pixel has a crosstalk. Since a clear image display can be obtained, the display of a notebook type personal computer or EW
It is used for S displays and the like, and its market is rapidly expanding. In this liquid crystal display device, an edge light type backlight is mainly used due to a demand for low power consumption or compactness.
【０００４】図５は従来のエッジライト方式のバックラ
イト部分の構造を示す側面縦断面図、図６はエッジライ
ト方式のバックライト部分の構造を示す正面横断面図で
ある。この方式のバックライトは光の物質差による臨界
角現象を利用したものであり、アクリル樹脂などからな
る透明部材からなる導光体１の端面からランプ２の光を
入射して導光体内部を導光させ、導光体１の裏面に配置
された反射パターン３と反射板４とによって均一に光を
導光体１表面から効率よく照射し、表示パネル５の光源
として利用するものである。FIG. 5 is a vertical sectional side view showing the structure of a conventional edge light type backlight, and FIG. 6 is a front cross sectional view showing the structure of the edge light type backlight. The backlight of this type utilizes a critical angle phenomenon due to a difference in light substance. Light from a lamp 2 is incident on an end face of a light guide 1 made of a transparent member made of an acrylic resin or the like, and the inside of the light guide is changed. The light is efficiently guided from the surface of the light guide 1 uniformly by the reflection pattern 3 and the reflection plate 4 arranged on the back surface of the light guide 1 to be used as a light source of the display panel 5.
【０００５】また、昨今の小型化要求の中から、表示パ
ネル５における表示部面積以外の外周部分が小さくなっ
ている。その際、導光体１は表示サイズよりも大きくな
ければ表示部全面を照らす光源として機能しないため、
導光体１は外形ぎりぎりまでの設計となり、導光板１を
支えるための部材が表示部近傍まで接近してきている現
状である。Further, due to recent demands for miniaturization, the outer peripheral portion of the display panel 5 other than the display area is reduced. At that time, the light guide 1 does not function as a light source for illuminating the entire display unit unless it is larger than the display size.
The light guide 1 is designed to be almost the outer shape, and a member for supporting the light guide plate 1 is approaching the vicinity of the display unit.
【０００６】従来のバックライトの導光体１の支持構造
は、図６に示すように、導光体１の厚み方向側面より凸
部８を突設し、その凸部８を、外枠６内に設けられてラ
ンプ２などを保持するための筐体７外周に形成された凹
部９に嵌合するものであり、この構造によって導光体１
を装置内において位置決めし、かつ外部からの応力など
によって移動しないようにしている。As shown in FIG. 6, the conventional structure for supporting the light guide 1 of a backlight has a projection 8 projecting from a side surface in the thickness direction of the light guide 1, and the projection 8 is attached to the outer frame 6. The light guide 1 is fitted into a concave portion 9 formed in the outer periphery of a housing 7 for holding the lamp 2 and the like provided inside the light guide 1.
Is positioned in the apparatus and is prevented from moving due to external stress or the like.
【０００７】[0007]
【発明が解決しようとする課題】ところで、ノートブッ
クタイプのパソコンには、機能性を重視する点と省エネ
ルギの観点からディスプレイとして液晶表示装置が使わ
れ、またディスクトップタイプの表示部としても、低消
費電力，省スペース化が図られ、発熱量も少ないディス
プレイとして液晶表示装置が使われるようになってい
る。これらに用いられる液晶表示装置は、現在では画面
対角寸法が３０cm（１２．１インチ）〜３５cm（１４イ
ンチ）にシフトしてきている。そのために液晶表示装置
に用いるバックライトサイズも対角で３０cmを超えてし
まう。In the notebook type personal computer, a liquid crystal display device is used as a display from the viewpoint of emphasizing functionality and energy saving, and a desktop type display unit is also used. Liquid crystal display devices have come to be used as displays with low power consumption and space savings and low heat generation. At present, the screen diagonal size of the liquid crystal display devices used in these devices has been shifted from 30 cm (12.1 inches) to 35 cm (14 inches). For this reason, the backlight size used for the liquid crystal display device exceeds 30 cm diagonally.
【０００８】このような大きさの中で導光体も大型化
し、重量がかさむため確実な固定をおこなわないと落下
衝撃などにより導光体が移動し、ランプと衝突してラン
プが割れるといった不具合が発生してしまう。それを解
決するために図６に示すような導光体１の支持構造が採
用されている。[0008] In such a size, the light guide becomes large and heavy, and if not securely fixed, the light guide moves due to a drop impact or the like, and collides with the lamp to break the lamp. Will occur. In order to solve this, a support structure for the light guide 1 as shown in FIG. 6 is employed.
【０００９】しかし、この支持構造では図７に示すよう
に、ランプ２から出射した光Ｌが、凸部８における導光
体１の外周部に連続する辺の壁面１０部分では臨界角を
超えた大きな角度で当たるため、この部分で光Ｌが抜け
てしまい、その部位が暗くなったり、また抜けた光Ｌが
反射して、照射ムラとして見える現象が起こってしまう
という問題がある。However, in this supporting structure, as shown in FIG. 7, the light L emitted from the lamp 2 exceeds the critical angle at the wall 10 of the side of the projection 8 which is continuous with the outer periphery of the light guide 1. Since the light L strikes at a large angle, the light L escapes at this portion, and the portion is darkened, and the escaped light L is reflected, causing a problem that it appears as irradiation unevenness.
【００１０】この問題は、従来のように周辺構造に寸法
の余裕があれば、表示範囲より離れているために、問題
にならなかったが、昨今の小型化により、導光体自体も
表示範囲ぎりぎりのサイズとなっており、前記のような
照射ムラが無視できなくなった。This problem has not been a problem if the peripheral structure has a margin as in the prior art because it is farther from the display range. The size was very small, and the irradiation unevenness as described above could not be ignored.
【００１１】本発明は、前記従来の課題を解決するため
のものであり、表示装置の大画面化に反して装置外形の
小型化が原因して生じる、導光体を支持する部位におけ
る照射ムラの発生を防ぐことができる表示装置のバック
ライト構造を提供することを目的とする。An object of the present invention is to solve the above-mentioned conventional problems. Irradiation unevenness in a portion for supporting a light guide, which is caused by downsizing of an outer shape of a display device against an increase in screen size of a display device. It is an object of the present invention to provide a backlight structure of a display device, which can prevent occurrence of an image.
【００１２】[0012]
【課題を解決するための手段】前記目的を達成するた
め、本発明は、導光体の端面からランプの光を入射さ
せ、導光体内部を導光させて表示部を照射する表示装置
におけるバックライト構造において、前記導光体におけ
る前記ランプの光を入射する面を除く厚み方向である側
面の一部に設けられた凸部と、導光体支持用の筐体に設
けられて前記凸部と嵌合する凹部とを備え、前記凸部の
外周を前記導光体の外周に対して略円弧形状にて連続す
るように形成したことを特徴とする。In order to achieve the above object, the present invention provides a display device in which light from a lamp is made incident from an end face of a light guide, and the inside of the light guide is guided to illuminate a display unit.
In the backlight structure in, put on the light guide
Side that is the thickness direction excluding the surface of the lamp
The projection provided on a part of the surface and the housing for supporting the light guide
The light guide is provided with a concave portion fitted with the convex portion, and an outer periphery of the convex portion is formed to be continuous with an outer periphery of the light guide in a substantially arc shape.
【００１３】また本発明は、導光体の端面からランプの
光を入射させ、導光体内部を導光させて表示部を照射す
る表示装置におけるバックライト構造において、前記導
光体における前記ランプの光を入射する面を除く厚み方
向である側面の一部に設けられた凹部と、導光体支持用
の筐体に設けられて前記凹部と嵌合する凸部とを備え、
前記凹部の内周を該凹部の底面に対して略円弧形状にて
連続するように形成したことを特徴とする。[0013] The present invention is, from the end face of the light guide with a light having a lamp, in the backlight structure in a display device for illuminating the display portion of the lightguide section by guiding the in the light guide lamp Thickness excluding the surface on which light is incident
Concave part provided on a part of the side surface
A projection provided in the housing and fitted with the recess ,
Characterized by being formed so as to be continuous in a substantially arc shape to the bottom surface of the inner circumferential recess of the recess.
【００１４】前記構成によって、導光体に設けられた凸
部もしくは凹部から光が抜けることがなくなり、光が抜
けたときに生じていた照射ムラによる表示品位の低下を
防ぐことを実現できる。According to the above configuration, light does not escape from the projections or recesses provided in the light guide, and it is possible to prevent a decrease in display quality due to irradiation unevenness caused when the light escapes.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。なお、図５ないし図７に基づいて説
明した部材と同様な作用をなす部材には同一符号を付し
て詳しい説明は省略する。Embodiments of the present invention will be described below with reference to the drawings. Members having the same functions as those described with reference to FIGS. 5 to 7 are denoted by the same reference numerals, and detailed description thereof will be omitted.
【００１６】図１は本発明の第１実施形態を説明するた
めの液晶表示装置のエッジライト方式のバックライト構
造を示す正面横断面図であり、第１実施形態におけるバ
ックライト構造は、略矩形状の導光体１外周に複数（図
では４箇所）の凸部８が設けられ、導光体１を支持する
筐体７内周には各凸部８に嵌合する凹部９が設けられて
いる。図１に示す状態において、導光体１は筐体７との
嵌合により位置決めされるため、落下衝撃などが加わっ
ても導光体１が所定の位置よりずれることがない。な
お、凸部８および凹部９の設置個数，間隔は仕様によっ
て適宜設定し、導光体１を支えることができれば本例に
限定されるものではない。FIG. 1 is a front cross-sectional view showing an edge-light type backlight structure of a liquid crystal display device for explaining a first embodiment of the present invention. The backlight structure in the first embodiment is substantially rectangular. A plurality of (four in the figure) convex portions 8 are provided on the outer periphery of the light guide 1 having a shape, and a concave portion 9 fitted to each convex portion 8 is provided on the inner periphery of the housing 7 supporting the light guide 1. ing. In the state shown in FIG. 1, since the light guide 1 is positioned by fitting to the housing 7, the light guide 1 does not shift from a predetermined position even when a drop impact or the like is applied. The number and interval of the projections 8 and the depressions 9 are appropriately set according to specifications, and are not limited to this example as long as the light guide 1 can be supported.
【００１７】さらに、凸部８における導光体１の外周面
に連続して接する部分を略円弧形状１１としている。こ
の略円弧形状１１は導光体１の外周面と連続して形成さ
れているため、図２に示すように、ランプ２から出射さ
れた光Ｌが略円弧形状１１部分に当たった場合、導光体
１の外周に近い部分で入射角０°に極めて近いため、光
Ｌは外部に抜けることはないし、また凸部８の先端に向
かっていってもなだらかに入射角が変化するだけであ
る。これにより、凸部８における導光体１の外周面に接
する点が分からない状態になり、よって、光の反射の変
化が発生しない。Further, a portion of the protruding portion 8 which is continuously in contact with the outer peripheral surface of the light guide 1 has a substantially arc shape 11. Since this substantially arcuate shape 11 is formed continuously with the outer peripheral surface of the light guide 1, as shown in FIG. 2, when the light L emitted from the lamp 2 hits the substantially arcuate shape 11, the light is guided. Since the angle of incidence is very close to 0 ° at the portion near the outer periphery of the light body 1, the light L does not escape to the outside, and the angle of incidence only changes gently even if it is headed toward the tip of the projection 8. . As a result, a point where the protrusion 8 is in contact with the outer peripheral surface of the light guide 1 is not known, so that a change in light reflection does not occur.
【００１８】ここで、凸部８の幅は導光体１を支えるた
めの幅があればよく、あまり大きくしすぎると、その部
分の筐体７が切り欠かれるため、筐体７自体の剛性が落
ち、強度の小さいバックライト構造になるおそれがあ
る。Here, the width of the projection 8 may be sufficient to support the light guide 1, and if the width is too large, the housing 7 at that portion is cut off, and the rigidity of the housing 7 itself is reduced. May fall, resulting in a backlight structure having low intensity.
【００１９】このように第１実施形態では、導光体１に
支持用の凸部８を設け、さらに凸部８に対応する箇所の
筐体７に凹部９を設けて、凸部８と凹部９とを嵌合させ
導光体１を筐体７に固定させることによって、導光板１
がずれてランプ２が割れたりすることを防止することが
できると共に、凸部８の存在によって生じていた従来の
ような配光（照射）ムラを発生させることのない構造と
なる。As described above, in the first embodiment, the light guide 1 is provided with the convex portion 8 for support, and furthermore, the concave portion 9 is provided in the housing 7 corresponding to the convex portion 8, so that the convex portion 8 and the concave portion are provided. 9 and the light guide 1 is fixed to the housing 7 so that the light guide plate 1
It is possible to prevent the lamp 2 from being broken due to misalignment, and to have a structure that does not cause uneven light distribution (irradiation) unlike the related art caused by the presence of the convex portion 8.
【００２０】なお、図１，図２において、複数の凸部８
における右側のものには、ランプ２からの入光側と反入
光側との両側を略円弧形状１１にしてあるが、左側のも
ののように反入光側のみを略円弧形状１１にしても、同
様に前記配光ムラを防ぐことができる。In FIGS. 1 and 2, a plurality of convex portions 8 are shown.
In the right-hand side of the above, both sides of the light incident side and the counter-light-in side from the lamp 2 are formed into a substantially circular arc shape 11, but as in the left side, only the counter-light-incoming side is formed into a substantially circular arc shape 11. Similarly, the light distribution unevenness can be prevented.
【００２１】また、凸部８を導光体１に設ける際に、本
例では導光体１の外周面に接する略円弧としたが、図３
に示すように、接線でなく接触角Ａが生じても同様な効
果を得ることができる。さらに、略円弧としては真円で
なく楕円などの曲線にしても問題はない。When the projection 8 is provided on the light guide 1, in this embodiment, the projection 8 is formed in a substantially circular arc in contact with the outer peripheral surface of the light guide 1.
As shown in FIG. 7, the same effect can be obtained even if a contact angle A occurs instead of a tangent. Further, there is no problem if the substantially circular arc is not a perfect circle but a curve such as an ellipse.
【００２２】図４は本発明の第２実施形態を説明するた
めの液晶表示装置のエッジライト方式のバックライト構
造を示す正面横断面図であり、第２実施形態におけるバ
ックライト構造が第１実施形態のバックライト構造と異
なる点は、略矩形状の導光体１の外周に複数（図では４
箇所）の凹部１５を設け、導光体１を支持する筐体７内
周に各凹部１５に嵌合する凸部１６を設けた構成にあ
る。FIG. 4 is a front cross-sectional view showing an edge-light type backlight structure of a liquid crystal display device for explaining a second embodiment of the present invention. The backlight structure in the second embodiment is the same as that of the first embodiment. The difference from the backlight structure of the embodiment is that a plurality of light guides (4 in FIG.
), And a projection 16 that fits into each of the recesses 15 is provided on the inner periphery of the housing 7 that supports the light guide 1.
【００２３】さらに、凹部１５の内周１５ａにおける当
該凹部１５の底面１５ｂに連続して接する部分を略円弧
形状１１としている。この凹部１５における略円弧形状
１１は凹部１５の底面１５ｂと連続して形成されている
ため、ランプ２から出射された光Ｌが略円弧形状１１部
分に当たった場合、凹部１５の底面１５ｂに近い部分で
入射角０°に極めて近いため、光Ｌは外部に抜けること
はないし、また凹部１５の開口側に向かっていってもな
だらかに入射角が変化するだけである。これにより、凹
部１５の内周１５ａが底面１５ｂに接する点が分からな
い状態になり、よって、光の反射の変化が発生しない。Furthermore, it has a portion in contact continuously to the bottom surface 15b of the recessed portion 15 in the inner periphery 15a of the recess 15 with substantially arcuate shape 11. Since the substantially arcuate shape 11 is formed continuously with the bottom surface 15b of the recess 15 in the recess 15, when the light L emitted from the lamp 2 hits the substantially arc-shaped 11 portion, the bottom surface 15b of the recess 15 Since the angle of incidence is very close to 0 ° in the portion close to, the light L does not escape to the outside, and the angle of incidence only changes gently even toward the opening side of the concave portion 15. This causes the state of the inner periphery 15a is not known is the point in contact with the bottom surface 15b of the recess 15, thus, the change in the reflection of light does not occur.
【００２４】したがって、第２実施形態では、導光体１
に支持用の凹部１５を設け、さらに凹部１５に対応する
箇所の筐体７に凸部１６を設けて、凸部１６と凹部１５
とを嵌合させ導光体１を筐体７に固定させることによっ
て、導光板１がずれてランプ２が割れたりすることを防
止することができると共に、凹部１５の存在によって生
じていた従来のような配光（照射）ムラを発生させるこ
とのない構造となる。Therefore, in the second embodiment, the light guide 1
A concave portion 15 for support, and a convex portion 16 provided on the housing 7 at a position corresponding to the concave portion 15 so that the convex portion 16 and the concave portion 15 are provided.
And the light guide 1 is fixed to the housing 7 to prevent the light guide plate 1 from being shifted and the lamp 2 from being cracked. The structure does not cause such light distribution (irradiation) unevenness.
【００２５】なお、図４において、複数の凹部１５にお
ける右側のものには、ランプ２からの入光側と反入光側
との両側を略円弧形状１１にしてあるが、左側のものの
ように入光側のみを略円弧形状１１にしても、同様に前
記配光ムラを防ぐことができる。In FIG. 4, the right side of the plurality of recesses 15 has a substantially arcuate shape 11 on both sides of the light incident side from the lamp 2 and the counter light incident side. Even when only the light incident side has a substantially arc shape 11, the light distribution unevenness can be similarly prevented.
【００２６】また、凹部１５を導光体１に設ける際に、
本例では凹部１５の内周を底面に接する略円弧とした
が、円弧形状の形成としては、第１実施形態において説
明したように、接線でなく接触角が生じても同様な効果
を得ることができる。さらに、略円弧としては真円でな
く楕円などの曲線にしても問題はない。When the recess 15 is provided in the light guide 1,
Although a substantially circular arc in contact with the bottom surface of the inner periphery of the recess 15 in this example, the formation of the arc, as described in the first embodiment, the contact angle not tangent obtain the same effect even if be able to. Further, there is no problem if the substantially circular arc is not a perfect circle but a curve such as an ellipse.
【００２７】なお前記各実施形態では、導光体１におけ
る凸部８あるいは凹部１５の配置を、図に示すように、
ランプ２の出射光方向と平行な導光体１における上下各
側面に設けているが、導光体１を支持することができれ
ば、各面すべてに設けなくても１面であっても構成によ
っては同様な効果が得られる。In each of the above embodiments, the arrangement of the convex portions 8 or the concave portions 15 in the light guide 1 is as shown in the drawings.
It is provided above and below each <br/> side surface in the emitted light parallel to the direction of the light guide 1 of the lamp 2, but if it is possible to support the light guide 1, is not necessarily provided on all the surface in one plane Even if there is, a similar effect can be obtained depending on the configuration.
【００２８】[0028]
【発明の効果】以上のように、本発明のバックライト構
造によれば、表示装置の導光体に凸部あるいは凹部を設
け、その凸部あるいは凹部の導光体の外周面に連続する
部分を略円弧形状にしたことによって、凸部や凹部によ
って生じる配光ムラをなくした表示装置を実現すること
ができる。As described above, according to the backlight structure of the present invention, a projection or a depression is provided on the light guide of the display device, and the projection or the depression is connected to the outer peripheral surface of the light guide. Has a substantially arc shape, it is possible to realize a display device in which light distribution unevenness caused by a convex portion or a concave portion is eliminated.
【００２９】また前記凸部あるいは凹部を、支持用筐体
の対応する部分に設けられた凹凸形状部と嵌合させるこ
とによって、導光体が衝撃などによって移動することを
防止することができる。Further, the light guide can be prevented from moving due to an impact or the like by fitting the convex portion or the concave portion with the concave-convex portion provided at the corresponding portion of the supporting housing.
【図１】本発明の第１実施形態を説明するための液晶表
示装置のバックライト構造を示す正面横断面図FIG. 1 is a front cross-sectional view showing a backlight structure of a liquid crystal display device for explaining a first embodiment of the present invention.
【図２】本発明の第１実施形態の導光体の凸部における
光の進行状態の説明図FIG. 2 is an explanatory view of a traveling state of light at a convex portion of the light guide according to the first embodiment of the present invention.
【図３】本発明の第１実施形態の導光体の凸部における
円弧形状の他の例を示す図FIG. 3 is a diagram showing another example of the arc shape of the convex portion of the light guide according to the first embodiment of the present invention.
【図４】本発明の第２実施形態を説明するための液晶表
示装置のバックライト構造を示す正面横断面図FIG. 4 is a front cross-sectional view showing a backlight structure of a liquid crystal display device for explaining a second embodiment of the present invention.
【図５】従来のエッジライト方式のバックライト部分の
構造を示す側面縦断面図FIG. 5 is a side longitudinal sectional view showing a structure of a conventional edge light type backlight portion.
【図６】従来のエッジライト方式のバックライト部分の
構造を示す正面横断面図FIG. 6 is a front cross-sectional view showing the structure of a conventional edge light type backlight portion.
【図７】図５，図６に示すバックライトの導光体の凸部
における光の進行状態の説明図FIG. 7 is an explanatory view showing a light traveling state at a convex portion of the light guide of the backlight shown in FIGS. 5 and 6;
１ 導光体 ２ ランプ ３ 導光体に設けられた反射パターン ４ 導光体に設けられた反射板 ５ 表示パネル ６ 外枠 ７ 筐体 ８ 導光体の凸部 ９ 筐体の凹部 １１ 凸部の略円弧形状 １５ 導光体の凹部 １６ 筐体の凸部 REFERENCE SIGNS LIST 1 light guide 2 lamp 3 reflection pattern provided on light guide 4 reflection plate provided on light guide 5 display panel 6 outer frame 7 housing 8 projection of light guide 9 recess of housing 11 projection Approximately arc-shaped 15 concave portion of light guide 16 convex portion of housing
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｇ０２Ｆ 1/13357 Ｇ０２Ｆ 1/1335 ５３０ (72)発明者 坪田 利幸 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 平10−227918（ＪＰ，Ａ) 特開 平５−142538（ＪＰ，Ａ) 特開 平９−26574（ＪＰ，Ａ) 特開 平10−247412（ＪＰ，Ａ) 特開 平９−152577（ＪＰ，Ａ) 特開 平４−102888（ＪＰ，Ａ) 特開 平９−15594（ＪＰ，Ａ) 特開 平７−218907（ＪＰ，Ａ) 特開 昭62−284307（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G09F 9/00 F21V 8/00 ────────────────────────────────────────────────── ─── Continuing on the front page (51) Int.Cl. 7 Identification code FI G02F 1/13357 G02F 1/1335 530 (72) Inventor Toshiyuki Tsubota 1006 Kazuma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. ( 56) References JP-A-10-227918 (JP, A) JP-A-5-142538 (JP, A) JP-A-9-26574 (JP, A) JP-A-10-247412 (JP, A) JP JP-A-9-152577 (JP, A) JP-A-4-102888 (JP, A) JP-A-9-15594 (JP, A) JP-A-7-218907 (JP, A) JP-A-62-284307 (JP) , A) (58) Fields investigated (Int. Cl. 7 , DB name) G09F 9/00 F21V 8/00
Claims (6)
せ、導光体内部を導光させて表示部を照射する表示装置
におけるバックライト構造において、前記導光体におけ
る前記ランプの光を入射する面を除く厚み方向である側
面の一部に設けられた凸部と、導光体支持用の筐体に設
けられて前記凸部と嵌合する凹部とを備え、前記凸部の
外周を前記導光体の外周に対して略円弧形状にて連続す
るように形成したことを特徴とする表示装置におけるバ
ックライト構造。1. A display device in which light from a lamp is incident from an end face of a light guide, and the inside of the light guide is guided to illuminate a display unit.
In the backlight structure in, put on the light guide
Side that is the thickness direction excluding the surface of the lamp
The projection provided on a part of the surface and the housing for supporting the light guide
Vignetting and a recess that mates with the convex portion, the back of the display device, characterized in that the formed continuously in a substantially circular arc shape outer periphery of the convex portion with respect to the outer circumference of the light guide Light structure.
を入射する面と相対する面である反入光側の形状を略円
弧状にしたことを特徴とする請求項１記載の表示装置に
おけるバックライト構造。2. The light of the lamp on the outer periphery of the projection.
The backlight structure in the display device according to claim 1, wherein the surface on the side opposite to the light incident side, which is opposite to the surface on which light is incident, has a substantially arc shape.
記ランプの光を入射する面を除く厚み方向である側面の
うち、少なくとも１面に凸部を設けたことを特徴とする
請求項１または２記載の表示装置におけるバックライト
構造。3. The light guide according to claim 1, wherein said light guide is substantially rectangular.
Of the side of the thickness direction except for the surface where the light of the lamp enters
3. The backlight structure according to claim 1 , wherein a projection is provided on at least one surface .
せ、導光体内部を導光させて表示部を照射する表示装置
におけるバックライト構造において、前記導光体におけ
る前記ランプの光を入射する面を除く厚み方向である側
面の一部に設けられた凹部と、導光体支持用の筐体に設
けられて前記凹部と嵌合する凸部とを備え、前記凹部の
内周を該凹部の底面に対して略円弧形状にて連続するよ
うに形成したことを特徴とする表示装置におけるバック
ライト構造。4. Light from a lamp is incident from an end face of a light guide.
Display device that guides the inside of the light guide to illuminate the display unit
In the backlight structure of the above,
Side that is the thickness direction excluding the surface of the lamp
And a recess provided in part of the surface and a housing for supporting the light guide.
And a convex portion fitted with the concave portion.
The inner circumference is continuous in a substantially arc shape with respect to the bottom surface of the concave portion.
The backlight structure in Viewing device you characterized in that the sea urchin formed.
を入射する面と同一方向面である入光側の形状を略円弧
状にしたことを特徴とする請求項４記載の表示装置にお
けるバックライト構造。 5. The light of the lamp on the inner periphery of the recess.
The shape of the light incident side, which is the same direction as the surface on which
The backlight structure in the display device according to claim 4, wherein the backlight structure is formed.
ける前記ランプの光を入射する面を除く厚み方向である
側面のうち、少なくとも１面に凹部を設けたことを特徴
とする請求項４または５記載の表示装置におけるバック
ライト構造。 6. A light guide, wherein said light guide is substantially rectangular.
In the thickness direction excluding the surface on which the light of the lamp is incident.
The backlight structure according to claim 4 , wherein a concave portion is provided on at least one of the side surfaces .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01724999A JP3300679B2 (en) | 1999-01-26 | 1999-01-26 | Backlight structure in display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01724999A JP3300679B2 (en) | 1999-01-26 | 1999-01-26 | Backlight structure in display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000214793A JP2000214793A (en) | 2000-08-04 |
| JP3300679B2 true JP3300679B2 (en) | 2002-07-08 |
Family
ID=11938688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01724999A Expired - Lifetime JP3300679B2 (en) | 1999-01-26 | 1999-01-26 | Backlight structure in display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3300679B2 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3662788B2 (en) * | 1999-10-06 | 2005-06-22 | Ｎｅｃ液晶テクノロジー株式会社 | Liquid crystal display device and portable information terminal device |
| KR100701014B1 (en) * | 2000-11-22 | 2007-03-29 | 삼성전자주식회사 | A light guide plate, a liquid crystal display module and a liquid crystal display device having the same |
| JP2002182204A (en) * | 2000-12-12 | 2002-06-26 | Optrex Corp | Backlight for liquid crystal display element |
| JP2002251911A (en) * | 2001-02-23 | 2002-09-06 | Enplas Corp | Surface light source device and image display device |
| KR20030008790A (en) * | 2001-07-20 | 2003-01-29 | 삼성전자 주식회사 | Liquid crystal display device |
| WO2004055430A1 (en) * | 2002-12-18 | 2004-07-01 | Sanyo Electric Co., Ltd. | Light unit |
| KR100970268B1 (en) * | 2003-10-11 | 2010-07-16 | 삼성전자주식회사 | Backlihgt assembly and display apparatus having the same |
| JP2008021613A (en) * | 2006-07-14 | 2008-01-31 | Tokai Rika Co Ltd | Illumination device |
| JP5294642B2 (en) * | 2008-01-25 | 2013-09-18 | シチズン電子株式会社 | Liquid crystal display device and injection mold for forming a thin light guide plate used in the liquid crystal display device |
| WO2012014601A1 (en) * | 2010-07-29 | 2012-02-02 | シャープ株式会社 | Illumination apparatus, display apparatus, and television receiver apparatus |
| WO2012133888A1 (en) * | 2011-04-01 | 2012-10-04 | シャープ株式会社 | Illumination device, display device, and television reception device |
| CN104412031A (en) * | 2012-07-24 | 2015-03-11 | 夏普株式会社 | Display device, and television receiver |
| WO2014017346A1 (en) * | 2012-07-24 | 2014-01-30 | シャープ株式会社 | Display device, and television receiver |
| TWI567457B (en) * | 2014-04-07 | 2017-01-21 | 瑞儀光電股份有限公司 | Optical assembly, backlight module and liquid crystal display |
| US10018868B2 (en) | 2014-12-26 | 2018-07-10 | Sharp Kabushiki Kaisha | Optical and positioning structures, illumination device, and display device having the same |
| CN112562519B (en) * | 2020-12-28 | 2023-01-06 | 湖北长江新型显示产业创新中心有限公司 | Foldable display device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62284307A (en) * | 1986-06-03 | 1987-12-10 | Alps Electric Co Ltd | Back light leading body |
| JP2509377B2 (en) * | 1990-08-23 | 1996-06-19 | 富士通株式会社 | Backlight device |
| JPH05142538A (en) * | 1991-11-21 | 1993-06-11 | Hitachi Ltd | Liquid crystal display device |
| JPH07218907A (en) * | 1994-01-27 | 1995-08-18 | Hitachi Ltd | Surface light emitting device |
| JP2946287B2 (en) * | 1995-06-29 | 1999-09-06 | 松下電器産業株式会社 | Liquid crystal display |
| JPH0926574A (en) * | 1995-07-10 | 1997-01-28 | Sanko Gosei Kk | Light transmission body |
| JP3395940B2 (en) * | 1995-11-30 | 2003-04-14 | 株式会社日立製作所 | Liquid crystal display |
| JPH10227918A (en) * | 1997-02-18 | 1998-08-25 | Copal Co Ltd | Light transmission member of surface-emitting device |
| JPH10247412A (en) * | 1997-03-03 | 1998-09-14 | Omron Corp | Surface light source device |
-
1999
- 1999-01-26 JP JP01724999A patent/JP3300679B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000214793A (en) | 2000-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3300679B2 (en) | Backlight structure in display device | |
| JP3415394B2 (en) | Backlight device | |
| JP4255607B2 (en) | Planar light source device and liquid crystal display device | |
| JP2012155236A (en) | Liquid crystal module | |
| JP2005032723A (en) | Receiving container, and backlight assembly and liquid crystal display device having the same | |
| CN110673389A (en) | Backlight module and display device | |
| KR20050105568A (en) | Lcd and the backlight unit thereof | |
| US20240069385A1 (en) | Optical membrane, backlight module and display device | |
| KR20080024569A (en) | Backlight assembly and liquid crystal display device having the same | |
| KR20160103601A (en) | Display apparatus | |
| JP2001166296A (en) | Liquid crystal display device | |
| KR100860520B1 (en) | Structure for back light of liquid crystal display | |
| JP2011124026A (en) | Lighting unit, and display device equipped with the same | |
| KR100970262B1 (en) | Direct type backlight unit | |
| JP2000137223A (en) | Liquid crystal display device | |
| KR200227827Y1 (en) | Lamp Reflector Structure of Backlight Unit | |
| KR200242508Y1 (en) | Anti-wrinkle structure of backlight unit | |
| KR100930913B1 (en) | Backlight unit | |
| JPH11306834A (en) | Backlight device and display device | |
| KR20040005162A (en) | Liquid crystal display module | |
| JP3387785B2 (en) | Display backlight | |
| KR20010062925A (en) | Back light unit for lcd device | |
| JP2003075838A (en) | Display device | |
| JPH09292529A (en) | Illuminator and liquid crystal display device | |
| KR20040005171A (en) | Backlight unit of liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080419 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090419 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100419 Year of fee payment: 8 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100419 Year of fee payment: 8 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100419 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110419 Year of fee payment: 9 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120419 Year of fee payment: 10 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130419 Year of fee payment: 11 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130419 Year of fee payment: 11 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140419 Year of fee payment: 12 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |